SAP Message REB_GENERATOR018 - Activation of access view &1 failed

Diagnosis
Activation of an access view failed.
An access view is a database view. It can only be activated if it isconsistent.
If there are other error messages for this access view and/or for thecondition table for which the view was created, they may provideinformation about the cause of the problem.
The reason may also be a lack of DDIC authorizations.

Procedure
Refer to the warnings and error messages that follow this message in theactivation log. These describe the cause of the activation problem indetail.